If the focal length of convex mirror is doubled then radius of curvature is
If the focal length of convex mirror is doubled then radius of curvature is
Naidu , 7 Years ago
Grade 12
General Physics> If the focal length of convex mirror is d...
2 Answers
ashwin
Last Activity: 7 Years ago
we know that ,radius of curvature=2×focal length. ie, r=2f .........................(1)
If the focal length is doubled, let us take the new focal length,F=2f ….....................(2)
The equation now becomes,R=2F
substitute equation (2) in (1)
we get R=2×2f
we also know ,r=2f
Therefore R=2×r
so if the focal length is doubled the radius of curvature also is doubled
Khimraj
Last Activity: 7 Years ago
and relation between focal length and radius is R = 2f
So if f becomes doubles then R also become doubles.
Hope it clears.
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